Stone-dressing machine.



W. H. VAN SICKEL.

STONE DRESSING MACHINE. APPLICATION FILED JUNE 10. i916.

1,227,095. Patented May 22,1917.

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" W. H. VAN SlCKEL. STONE mzzssme MACHINE.

APPLICATION FILED JUNE 10, 1916.

1,227,095. Patented May 22, 1917.

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W. H. VAN SICKEL.

STONE DRESSING MACHINE.

APPLICATION FILED JUNE 10, I916.

I 1,227,095. 7 Patented May 22, 1917.

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WILBEB H. VAN SICKEL, OF LANGI-IORNE, PENNSYLVANIA, ASSIGNOR TO THOS. H.DALLETT 00., A CORPORATION OF NEW JERSEY;

STONE-DRESSING MACHINE.

- Specification of Letters Patent.

Patented May 22, 191*.

Application filed. June 10, 1916. Serial No. 102,829.

To all whom it may concern Be it known that I, WILBER H. VAN SICKEL, acitizen of the United States, residing at Langhorne, county of Bucks,and State of Pennsylvania, have invented a new and useful Improvement inStone-Dressing Machines, of which the following is a full, clear, andeXact description, reference being had to the accompanying drawings,which form a part of this specification.

My invention relates to stone-surfacing or dressing machines of theportablevariety. The particular objects ofmy invention are to provide amachine the base of which, while being readily movable, shall yet provesufficiently substantial to carry a pivoted tool arm of considerablereach Without either guying or supports in a satisfactory manner; whichtool arm shall also be such that the surfacing tool carried thereby hasa maximum range of movement, from the ground up and from one side to theother, with the base of the machine remaining in one set position.

Further objects of my invention are im provementsin the manner ofsetting the machine, provision for leveling when placed upon unevenground, and a construction of the tool holding arm which allows ofreadily and easily mounting the surfacing tool in place or removing it.v

.Other advantages of myinvention will be brought out in the descriptionof themachine.

Myinvention will be readily understood from'the following description ofa preferred embodiment thereof together with the accompanying drawings,in which:

Figure 1 isaside view of the machine.

Figs. 2 and'3 are rear views in different positions. I

Fig. 4 is a plan view taken in section on kne l-+4 of Fig. 1.

Fig. 5 is a partial section'on line 5-5 of Fig. 2. i V

Fig.6 is a detail view in section on line 6 of Fig. 2.

Fig. 7 is anend view of the tool carrying arm shown in Fig, 6. I

In generahthe base a of the machine is supported abovethe ground onadjusting screws 7) at the four corners. This base carries the pedestalor carriage c and is provided with ways cl wherein the pedestal is m ale t d fr m the Work,

The pedestal has a pivoted head 6 which carries the shaft f to one endof which is attached" the arm 9 for carrying the tool sup porting frame.This frame comprises a portion it pivoted to the end of arm 9 at i, and

a portion 9', connected to portion h by bolts and springs 70 as shown inFig. 1.. This is for the purpose of allowing a certain movement of theportion j with respect to h, which provides enough resilience in theaction of the tool to prevent jars and shocks and produce the bestsurfacing results.

i Portion j has a head Z which forms a seat for the pneumatic hammer ortool m, which is of the usual variety of air-operated automatic pistontype. Portion h is provided with an extension on the opposite side ofpivot 11 for a counter weight n, which may be adjusted to just balancethe weight of the tool and its supporting frame. Thus the. tool maybereadily and easily turned about pivot 2', and no more effort is requiredto raise than to lower it, no matter what position the tool carryingframe may assume.

Opposite to the frame carrying arm 9, on shaft f, is attached anarmjwith an adjustable counter weight 0 by which arm 9 and all that itcarries may be counterbalanced. Thus, however shaft fmay be turned, the

tool carrying frame is readily counterbalanced and may beraisedand'lowered with equal. ease. 7,

Bym'eans of the twopivots 11 and f and the counterweightsn and 0, thetool'm may be moved in a vertical planeto apply its surfacing actionanywhere within the limit of 'a-radius equaling the combined lengths ofthe arm 9 and the tool carrying frame.

ways 03 on the base of the machine For this purpose the pedestal hasdepending ears 1" and the base carries an interior bracket 8,

the surface a by sliding the pedestal in the serted and withdrawnthrough openings y in the sides of the base. It will be noticed thatopenings y are at a slightly lower level than the seats for the squarenuts, so that while there is any weight upon the screw the nut cannot byany possibility be forced sidewise from its seat. Each of theseadjusting screws is turnable by a rod being inserted in holes providedin the head of'the screw, which may thus be screwed down until it takesits share of the weight of the machine, or until the corner which itsupports is raised to the level desired.

In assembling a tool of the class described ready for work, the tool isregularly built up upon the tool carrying head Z of the carrying frame.As the tool parts are in themselves heavy and cumbersome, this is adifiicult task if the tool is assembled in the horizontal position inwhich it is to be used.

To overcome this difliculty, I have made head Z turnable in the end ofportion j, in Figs. 6 and 7. The head has a neck 10 which enters andturns in the end of Projecting from the flange of the head is a bracket11 having a hole into which the base of tool at fits and is secured inthe usual manner.

The flange of head Z is attached to portion by bolts, one of which, 12,is slidable in a concentric slot 13 provided in the flange and extendinga distance of at least 90. By taking out all the bolts except bolt 12,and by loosening the nut of bolt 12, the head Z may be turned in theportion j so that the tool carried by bracket 11 extends vertically.This may be done after the frame-carrying arm is brought and held in ahorizontal position. To hold the frame in this position during themounting or demounting of a tool, I provide a rod 14, horizontallyslidable in a lug 15 on one side of pedestal 0. In the extensioncarrying the counterweight n, I provide a hole 16 in such position thatwhen the tool-carrying frame has been brought down to a convenientheight to work upon and turned to a horizontal position hole 16 willaline with red 14. The rod is then slid along through hole 16, lug 15being long enough to maintain rod 1 1 horizontal even with weightimposed on the end of it. Cotter pins are provided near the ends of rod1 1 to be removed when neccssary.

Having brought the tool-carrying frame down into horizontal position asdescribed,

the tool is mounted thereon. as follows: Head Z is turned as describeduntil bracket 11 is horizontal, and nut of bolt 12 is tightened to holdthe head in this position. Then the tool m is built up thereon, whichmay be as readily done as if it were on a work bench or table. Bolt 12is then loosened and the tool is turned down to horizontal workingposition and bolt 12 tightened again and other bolts inserted to holdhead Z rigidly in place.

Now counterweight a is adjusted on its arm to counterbalance the frameand too]. Also counterweight 0 is likewise adjusted to balance partscarried by arm o. Then rod 1% is retracted out of hole 16 to theposition shown in Fig. 1, and the perfectly balanced tool is ready foroperation.

hen necessary to remove the whole machine, a fixed bail 17 provideshandling means whereby a crane or other hoist may be readily attached.

Having now fully described my invention, what I claim and desire toprotect by Letters Patent is 1. The combination with a horizontallymovable pedestal, of an arm and a counterbalancing weight pivotallymounted on the pedestal on a horizontal axis, a tool-carrying frame anda counter-balancing weight pivotally mounted on the arm on an axisparallel to the first axis, and a head on the frame arranged to supporta pneumatic tool in a position to cause its reciprocable member'tooperate parallel to said axes.

2. In a surfacing machine, the combination with a pedestal, of a headturnable on a vertical axis on the pedestal, an arm and acounter-balancing weight mounted on a horizontal axis on the head, atool-carrying frame and a counter-balancing weight mounted on ahorizontal axis on the arm, and a surfacing tool support carried by theframe.

3. In a surfacing machine, the combination with a base, of a pedestaladjustable horizontally thereon, a head turnable on a vertical axis onthe pedestal, a horizontal shaft turnable on the head, an arm and acounter-balancing weight carried by the shaft on opposite sides of thepedestal, a toolcarrying frame and a counter-balancing weight mounted onthe arm on an axis parallel to said shaft, and a surfacing tool sup portcarried by the frame whereby the tool may be held in angular relation tothe frame.

4. In a machine for dressing vertically ex tending surfaces, thecombination with a base, of a pedestal supported on the base and movablehorizbntally thereon to regulate the distance between the pedestal andthe surface to be dressed, a head turnable in a vertical axis on thepedestal to bring the parts carried by the head in proper angularrelation to the surface to be dressed, an arm pivotally supported on thehead on a horizontal axis, a counter-balanced tool-carrying framepivotally supported on the arm on an.

aXis parallel to the axis on Which the arm is supported, a Weightcounter-balancing the arm and the counter-balanced tool-carrying framecarried thereby, and a surfacing tool support carried by said frame andpositioned to support the tool to cause the latter to extend in adirection parallel to said horizontal axes, thus enabling the tool tooper- Oopies of this patent may be obtained for ate on a verticalsurface by movement in a Vertical plane throughout a radius equaling thecombined lengths of the said arm and frame and to be properlycounter-balanced in'any position within its range of movement.

In testimony ofwhich invention, I have hereuntoset my hand, atPhiladelphia, on this 7th day of June, 1916.

WILBER H. VAN sIoKEL,

five cents each, by addressing the Commissioner of Patents, Washington,D. 0.

